#ifndef _NET_GRO_CELLS_H #define _NET_GRO_CELLS_H #include #include #include struct gro_cell { struct sk_buff_head napi_skbs; struct napi_struct napi; }; struct gro_cells { struct gro_cell __percpu *cells; }; static inline int gro_cells_receive(struct gro_cells *gcells, struct sk_buff *skb) { struct gro_cell *cell; struct net_device *dev = skb->dev; if (!gcells->cells || skb_cloned(skb) || !(dev->features & NETIF_F_GRO)) return netif_rx(skb); cell = this_cpu_ptr(gcells->cells); if (skb_queue_len(&cell->napi_skbs) > netdev_max_backlog) { atomic_long_inc(&dev->rx_dropped); kfree_skb(skb); return NET_RX_DROP; } __skb_queue_tail(&cell->napi_skbs, skb); if (skb_queue_len(&cell->napi_skbs) == 1) napi_schedule(&cell->napi); return NET_RX_SUCCESS; } /* called under BH context */ static inline int gro_cell_poll(struct napi_struct *napi, int budget) { struct gro_cell *cell = container_of(napi, struct gro_cell, napi); struct sk_buff *skb; int work_done = 0; while (work_done < budget) { skb = __skb_dequeue(&cell->napi_skbs); if (!skb) break; napi_gro_receive(napi, skb); work_done++; } if (work_done < budget) napi_complete_done(napi, work_done); return work_done; } static inline int gro_cells_init(struct gro_cells *gcells, struct net_device *dev) { int i; gcells->cells = alloc_percpu(struct gro_cell); if (!gcells->cells) return -ENOMEM; for_each_possible_cpu(i) { struct gro_cell *cell = per_cpu_ptr(gcells->cells, i); __skb_queue_head_init(&cell->napi_skbs); set_bit(NAPI_STATE_NO_BUSY_POLL, &cell->napi.state); netif_napi_add(dev, &cell->napi, gro_cell_poll, 64); napi_enable(&cell->napi); } return 0; } static inline void gro_cells_destroy(struct gro_cells *gcells) { int i; if (!gcells->cells) return; for_each_possible_cpu(i) { struct gro_cell *cell = per_cpu_ptr(gcells->cells, i); netif_napi_del(&cell->napi); __skb_queue_purge(&cell->napi_skbs); } free_percpu(gcells->cells); gcells->cells = NULL; } #endif 19bc537ff4a'>commitdiff

path: root/include/net/nl802154.h

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